Welcome to your first visit to Straight Up Performance Straight Up Performance is your scooter resource for adding value and performance to your twist and go scooter. Twist and Go scooters use a CVT to transfer the power or energy to your rear wheel by way of a  continuously variable transmission (CVT) is a transmission that can change steplessly through an infinite number of effective gear ratios between maximum and minimum values. This contrasts with other mechanical transmissions that offer a fixed number of gear ratios. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities. You will find info on stock parts and performance parts as well as style parts and scooter racing parts. Many brands are represented here and I am sure … Read entire article »